Touch control method

ABSTRACT

A touch control method is provided. The method includes: providing a touch device with multiple touch electrodes; determining whether an object is located in a sensing distance; detecting a sensing group sensing the object if the determination is yes; determining whether an electrode amount in the electrode group is between a first value and a second value; determining whether a sensing time of a predetermined proportion of the touch electrodes in the sensing group is equal to or greater than a predetermined time; executing a fingerprint recognition mode if the electrode amount is between the first value and the second value, and the sensing time is equal to or greater than the predetermined time; executing a touch operation mode if the electrode amount is less than the first value or greater than the second value, or the sensing time is less than the predetermined time.

BACKGROUND Technical Field

The disclosure is related to a touch control method, particularlyrelated to a touch control method integrating a fingerprint recognitionmode and a touch operation mode.

Description of Related Art

The touch function is fundamental function for most of the smartelectronic devices, and with the increasing development of electronicbusiness, introducing biological recognition technology is a necessaryrequirement. Particularly, the fingerprint recognition is the primaryselection. Specifically, regarding the popularity of the frameless fullscreen touch device nowadays, how to integrate the fingerprintrecognition function to the display screen becomes the important issue.

In the related art, the main stream of the in-display fingerprinttechnology is ultrasonic type and optical type. However, the primarydisadvantages of that are high cost and manufacturing difficulty such asalignment difficulty or optical path problem. Moreover, the sensing areaof the fingerprint recognition device is small and restricted tospecific spot, that may decrease the convenience for usage. Further, thecost of the electronic product may be increased because the fingerprintrecognition device needs to be installed additionally. Laptop may alsohave the need of integrating touch function and fingerprint recognitionfunction. However, when the two functions are integrated, how to improvethe using experience and automatically and effectively recognize whetherthe user performs touch operation or identity confirmation becomes theimportant issue.

In view of this, the inventors have devoted themselves to theaforementioned related art, researched intensively try to solve theaforementioned problems.

SUMMARY OF THE DISCLOSURE

The object of the disclosure is to provide a touch control methodintegrating the touch operation mode and the fingerprint recognitionmode in the same touch device.

In order to achieve the object, the disclosure provides a touch controlmethod configured to control a touch control mode and a fingerprintrecognition mode. The method includes: providing a touch device, whereinthe touch device includes a plurality of touch electrodes, and eachtouch electrode comprises a plurality of sensing electrodes; determiningwhether an object is located in a sensing distance of the touchelectrodes; if result of the determining is yes, detecting a sensinggroup of the touch electrodes sensing the object; determining whether anelectrode amount in the sensing group is greater than or equal to afirst value and less than or equal to a second value; determiningwhether a sensing time of a predetermined proportion of the touchelectrodes in the sensing group is greater than or equal to apredetermined time; if the electrode amount is greater than or equal tothe first value and less than or equal to the second value, and if thesensing time is greater than or equal to the predetermined time,executing the fingerprint recognition mode; and if the electrode amountis less than the first value and greater than the second value, or ifthe sensing time is less than the predetermined time, executing thetouch operation mode.

In order to achieve the object, the disclosure provides a touch controlmethod configured to control a touch control mode and a fingerprintrecognition mode. The method includes: providing a touch device, whereinthe touch device includes a plurality of sensing electrodes; determiningwhether an object is located in a sensing distance of the sensingelectrodes; if result of the determining is yes, detecting a sensinggroup of the sensing electrodes sensing the object; determining whethera sensing time of a predetermined proportion of the sensing electrodesin the sensing group is greater than or equal to a predetermined time;if the sensing time is greater than or equal to the predetermined time,executing the fingerprint recognition mode; and if the sensing time isless than the predetermined time, executing the touch operation mode.

In order to achieve the object, the disclosure provides a touch controlmethod configured to control a touch control mode and a fingerprintrecognition mode. The method includes: providing a touch device, whereinthe touch device includes a plurality of sensing electrodes; determiningwhether an object is located in a sensing distance of the sensingelectrodes; if result of the determining is yes, detecting a sensinggroup of the sensing electrodes sensing the object; determining whethera sensing area of the sensing group is greater than or equal to a firstarea and less than or equal to a second area; determining whether asensing time of a predetermined proportion of the sensing electrodes inthe sensing group is greater than or equal to a predetermined time; ifthe sensing area is greater than or equal to the first area and lessthan or equal to the second area, and if the sensing time is greaterthan or equal to the predetermined time, executing the fingerprintrecognition mode; and if the sensing area is less than the first area orgreater than the second area, or if the sensing time is less than thepredetermined time, executing the touch operation mode.

In the touch control method of the disclosure, by determining whetherthe electrode amount of the touch electrodes or the sensing electrodesis between two predetermined threshold values and determining thesensing time of the predetermined proportion of the touch electrodes orthe sensing electrodes is greater than or equal to the predeterminedtime, the fingerprint recognition mode and the touch operation mode maybe respectively executed on the same touch device. Therefore, thefingerprint recognition device and the touch device do not need to beinstalled separately. The manufacturing cost of the electronic productmay be decreased and the problem of limitation to the installinglocation of the fingerprint recognition device may be prevented.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is the flowchart of a touch control method, in accordance withthe first embodiment of the disclosure.

FIG. 2A is the flowchart of a touch operation mode in the touch controlmethod of the disclosure.

FIG. 2B is the flowchart of a standby mode in the touch control methodof the disclosure.

FIG. 2C is the flowchart of a fingerprint recognition mode in the touchcontrol method of the disclosure.

FIG. 3 is the schematic diagram of the touch device in the touch controlmethod of the disclosure.

FIG. 4 is the flowchart of a touch control method, in accordance withthe second embodiment of the disclosure.

FIG. 5 is the flowchart of a touch control method, in accordance withthe third embodiment of the disclosure.

DETAILED DESCRIPTION

The technical contents of this disclosure will become apparent with thedetailed description of embodiments accompanied with the illustration ofrelated drawings as follows. It is intended that the embodiments anddrawings disclosed herein are to be considered illustrative rather thanrestrictive.

The following disclosure provides many different embodiments, orexamples, for implementing different features of the provided subjectmatter. Specific examples of components and arrangements are describedbelow to simplify the present disclosure. These are, of course, merelyexamples and are not intended to be limiting. For example, the formationof a first feature over or on a second feature in the description thatfollows may include embodiments in which the first and second featuresare formed in direct contact, and may also include embodiments in whichadditional features may be formed between the first and second features,such that the first and second features may not be in direct contact. Inaddition, the present disclosure may repeat reference numerals and/orletters in the various examples. This repetition is for the purpose ofsimplicity and clarity and does not in itself dictate a relationshipbetween the various embodiments and/or configurations discussed.

Further, spatially relative terms, such as “beneath,” “below,” “lower,”“above,” “upper,” “lower,” “left,” “right” and the like, may be usedherein for ease of description to describe one element or feature'srelationship to another element(s) or feature(s) as illustrated in thefigures. The spatially relative terms are intended to encompassdifferent orientations of the device in use or operation in addition tothe orientation depicted in the figures. The apparatus may be otherwiseoriented (rotated 90 degrees or at other orientations) and the spatiallyrelative descriptors used herein may likewise be interpretedaccordingly. It should be understood that when an element is referred toas being “connected to” or “coupled to” another element, it may bedirectly connected to or coupled to the other element, or interveningelements may be present.

FIG. 1 is the flowchart of a touch control method, in accordance withthe first embodiment of the disclosure. Referring to FIG. 1, the touchcontrol method 100 of the first embodiment in the disclosure is used forcontrolling a touch operation mode and a fingerprint recognition mode.The touch control method includes the step S100 to the step S106. Thestep S100 is providing a touch device. The touch device includes aplurality of touch electrodes, and each touch electrode comprises aplurality of sensing electrodes. The step S101 is determining whether anobject is located in a sensing distance of the touch electrodes. Thestep S102 is that if result of the determining is yes, detecting asensing group of the touch electrodes sensing the object. The step S103is determining whether an electrode amount in the sensing group isgreater than or equal to a first value and less than or equal to asecond value. The step S104 is determining whether a sensing time of apredetermined proportion of the touch electrodes in the sensing group isgreater than or equal to a predetermined time. The step S105 is that ifthe electrode amount is greater than or equal to the first value andless than or equal to the second value, and if the sensing time isgreater than or equal to the predetermined time, executing thefingerprint recognition mode. The step S106 is that if the electrodeamount is less than the first value or greater than the second value, orif the sensing time is less than the predetermined time, executing thetouch operation mode.

FIG. 3 is the schematic diagram of the touch device in the touch controlmethod of the disclosure. Referring to FIG. 3 and the step S100 in FIG.1, the touch device 300 may be installed in an electronic product (notshown in figures). In some embodiments, the touch device 300 may includea plurality of touch electrodes 310, a substrate 320, and a controlcircuit 330 (for example, fingerprint and touch control integratedcircuit). Each touch electrode 310 may include multiple sensingelectrodes 311 disposed on the substrate 320. It should be noted thatthe amount of the sensing electrodes 311 in each touch electrode 310 isnot limiting, and here uses, but not limited to, four sensing electrodes311 in one touch electrode 310 as an example. Further, the area of thesensing electrode 311 may be, but not limited to, substantially lessthan or equal to 40000 μm² (or 200 μm×200 μm). The control circuit 330is used to control and drive the touch electrodes 310 and the sensingelectrodes 311.

In some embodiments, the touch device 300 may further include multipleswitch circuit groups, multiple data lines, multiple control lines,etc., here is not intended to be limiting. For clearly specifying thedisclosure, the aforementioned circuit elements are not shown infigures. In some embodiments, the touch device 300 may further include adisplay screen (not shown in figures), and the sensing electrodes 311may be located on a display region of the display screen. It is worthmentioning that the total area formed by the sensing electrodes 311 maybe substantially equal to or less than the area of the display region.Further, the sensing electrodes 311 in the disclosure are physicallyformed electrode, for example, the electrode formed by the conductivematerial. On the other hand, the touch electrodes 310 are the logicelectrode collectively formed by connecting multiple sensing electrodes311 with multiplexer and connection lines. Therefore, the controlcircuit 330 may determine and respectively control the sensingelectrodes 311 or touch electrodes 310. The precision for fingerprintsensing may be provided because the area of the sensing electrode 311 issmaller comparing to that of the touch electrode 310. On the other hand,rapid touch detection may be provided by logically organizing thesensing electrodes 311 to assemble the touch electrodes 310 to make thetouch device 300 execute the corresponding touch function.

Referring to FIG. 3 and the step S101 in FIG. 1, the touch device 300(or the control circuit 330 thereof) may be configured to determinewhether the object 400 is located in the sensing distance of the touchelectrodes 310. In some embodiments, the object 400 may be, but notlimited to, the user's finger or the auxiliary instrument for touchfunction (such as touch stylus). It should be noted that the conditionsof the object 400 being located in the sensing distance of the touchelectrodes 310 include the condition of the object 400 directlycontacting the touch device 300, and the condition of the object 400 andthe touch device 300 being separated in a distance where the touchelectrodes 310 may sense the object 400 (that is, proximity sensing).Further, the touch device 300 may be configured to sequentially orrandomly detect the touch electrodes 310 (or the sensing electrodes 311)to determine whether any object 400 approaches. If result of thedetermination is yes, the step S102 is executed. If result of thedetermination is no, the step S101 is re-executed. In other words, ifresult of the determination is no, the touch device 300 may beconfigured to keep detecting the touch electrodes 310 and to determinewhether any object 400 is located in the sensing distance of the touchelectrodes 310 (or the sensing electrodes 311).

Referring to FIG. 3 and the step S102 in FIG. 1, if result of thedetermination is yes, the touch device 300 may detect the sensing groupG of the touch electrodes 310 sensing the object 400. The sensing groupG has multiple touch electrodes 310 sensing the object 400. It should benoted that the sensing group G indicates a single sensing range formedby adjacent touch electrodes 310. In other words, the sensing group Gincludes the touch electrodes 310 in the single sensing range sensed thesingle object 400.

Referring to FIG. 3 and the step S103 in FIG. 1, the electrode amount Nin the sensing group G is determined. The electrode amount N indicatesthe amount of the touch electrodes 310 in the sensing group G. That is,the amount of the touch electrodes 310 sensing the object 400. If theelectrode amount N is greater than or equal to the first value N_(min)and less than or equal to the second value N_(max), that is,N_(min)≤N≤N_(max), the step S104 is executed. If the electrode amount Nis less than the first value N_(min) or greater than the second valueN_(max), that is, N_(max)<N or N<N_(min), the step S106 is executed. Insome embodiments, the first value is less than or equal to 5 and thesecond value is greater than or equal to 50, here is not intended to belimiting.

Further, referring back to FIG. 3, in some embodiments, the touch device300 may be configured to measure the sensing capacitance value of anyone touch electrode 310 to determine whether the touch electrode 310belongs to the sensing group G. For example, even a part of the touchelectrode 310 is located in the range of the sensing group G, the touchelectrode 310 is still not being counted as the electrode amount N ifthe sensing capacitance value is not greater than a threshold value.Similarly, even a part of the touch electrode 310 is not located in therange of the sensing group G, the touch electrode 310 is still beingcounted as the electrode amount N if the sensing capacitance value isgreater than the threshold value.

Referring to FIG. 3 and the step S104 in FIG. 1, whether the sensingtime T of the predetermined proportion of the touch electrodes 310 inthe sensing group G is greater than or equal to the predetermined timeT_(th) is determined. In some embodiments, the predetermined proportionmay be, for example, greater than or equal to 70%. In other words, thesensing time T of greater than or equal to 70% of the electrode amount Nin the sensing group G is being compared to the predetermined timeT_(th), here is not intended to be limiting. Depending on therequirement, the predetermined proportion may be configured as greaterthan or equal to 75%, greater than or equal to 80%, greater than orequal to 85%, or greater than or equal to the other proportions. Thesensing time T indicates the time that the touch electrodes 310continuously sense the object 400. The predetermined time T_(th) is, butnot limited to, greater than or equal to 100 msec. If the sensing time Tis greater than or equal to the predetermined time T_(th), that is,T_(th)≤T, the step S105 is executed. If the sensing time T is less thanthe predetermined time T_(th), that is, T<T_(th), the step S106 isexecuted.

Referring to FIG. 3 and the step S105 in FIG. 1, if the electrode amountN is greater than or equal to the first value N_(min) and less than orequal to the second value N_(max), and if the sensing time T is greaterthan or equal to the predetermined time T_(th), the fingerprintrecognition mode is executed.

FIG. 2C is the flowchart of a fingerprint recognition mode in the touchcontrol method of the disclosure. Referring to FIG. 2C, the fingerprintrecognition mode 200C may include the step S200 to the step S202.Referring to FIG. 3 and the step S200 and the step S201 in FIG. 2C, thestep S200 is detecting at least a portion of the sensing electrodes 311of the touch electrodes 310 in the sensing group G, and the step S201 isobtaining a fingerprint image. In some embodiments, when the fingerprintrecognition mode 200C is executed, the touch device 300 may beconfigured to detect at least a portion of the sensing electrodes 311 inthe sensing group G sensing the object 400 to obtain the fingerprintimage (not shown in figures) through the sensing electrodes 311. Inother words, a portion of the sensing electrodes 311 in the sensinggroup G is used as the target electrodes, each sensing electrode 311obtains part of the image data of the fingerprint image, and the touchdevice 300 is configured to construct the complete fingerprint imagethrough detecting the image data obtained by the sensing electrodes 311.

Referring to FIG. 3 and the step S202 in FIG. 2C, the step S202 isdetecting a fingerprint feature of the fingerprint image and generatinga determination result. In some embodiments, the touch device 300 may beconfigured to detect the fingerprint image, obtain the fingerprintfeature, and perform analysis to the fingerprint feature. For example,the fingerprint feature may be compared with the fingerprint data in thedatabase, whether the fingerprint feature is conformed with anyfingerprint data in the database may be determined, and thedetermination result is generated.

In some embodiments, the fingerprint recognition mode 200C may furtherinclude the step of executing a fingerprint authentication actionaccording to the determination result. That is, if the determinationresult is that the fingerprint image is conformed with the fingerprintdata in the database, the touch device 300 may execute the fingerprintauthentication action. The fingerprint authentication action includes anunlock action, an authentication action, and an open action, here is notintended to be limiting. On the other hand, if the determination resultis that the fingerprint image is not conformed with the fingerprint datain the database, the touch device 300 does not execute the fingerprintauthentication action.

The unlock action may be, for example, to unlock the electronic producthaving the touch device 300 (as shown in FIG. 3). When the electronicproduct is unlocked, the user may operate the electronic product.

The authentication action, for example, may include an identityauthentication action, a file encryption/decryption action, and anonline payment action. The identity authentication action, for example,is executing the user authenticating action when the user executesspecific application or website. The file encryption/decryption action,for example, is executing the encrypting or decrypting action tospecific file when the user executes specific file. The online paymentaction, for example, is executing the paying action when the userexecutes specific application or website to purchase items.

The open action includes a file open authorization action and anapplication open authorization action. The file open authorizationaction, for example, is executing the authorizing action for opening theencrypted file when the user intends to execute specific encrypted file.The application open authorization action, for example, is executing theauthorizing action for opening the encrypted application when the userintends to execute specific encrypted application.

Referring to FIG. 3 and the step S106 in FIG. 1, if the electrode amountN is less than the first value N_(min) or greater than the second valueN_(max), or if the sensing time T is less than the predetermined timeT_(th), the touch operation mode 200A is executed. FIG. 2A is theflowchart of a touch operation mode in the touch control method of thedisclosure. The touch operation mode 200A may include the step S210 andthe step S211. Referring to FIG. 3 and the step S210 in FIG. 2A, thestep S210 is detecting the touch electrodes 310 in the sensing group G.In some embodiments, when the touch device 300 is configured to executethe touch operation mode 200A, the touch device 300 may detect the touchelectrodes 310 in the sensing group G sensing the object 400 to obtain asensing location (for example, the location of the sensing group G inFIG. 3) through the touch electrodes 310.

Referring to FIG. 3 and the step S211 in FIG. 2A, the step S211 isdetecting the sensing location and generating a sensing result. Thesensing result, for example, may include a clicking action, a slidingaction, and the other useful touch operation actions. The touch device300 may be configured to correspondingly display the image on thedisplay region of the display screen according to the sensing result.For example, the image on the display region may display the open actionfor the application corresponding to the clicking action from the user.For another example, the image on the display region may display thesliding action for pages corresponding to the sliding action from theuser.

In summary, in the touch control method of the disclosure, bydetermining whether the electrode amount N of the touch electrodes 310sensing the object 400 is between two predetermined threshold valuesN_(min), N_(max) and determining whether the sensing time T of thepredetermined proportion of the touch electrodes 310 is greater than orequal to the predetermined time T_(th), the fingerprint recognition mode200C and the touch operation mode 200A may be respectively executed onthe same touch device 300. In other words, the fingerprint recognitiondevice and the touch device do not need to be installed separately, themanufacturing cost of the electronic product may be decreased. Further,the installing location of the fingerprint recognition device does notneed to be restricted on corner or specified location. Thus, thefull-screen fingerprint recognition may be provided to increase theconvenience of the electronic product.

In some embodiments, the touch control method of the disclosure mayfurther include a standby mode. FIG. 2B is the flowchart of a standbymode in the touch control method of the disclosure. The standby mode200B may include the step S220 and the step S221. Referring to FIG. 3and the step S220 in FIG. 2B, the step S220 is determining whether asensing area A of the sensing group G is greater than a predeterminedarea A_(th) when the touch operation mode is executed 200A. The touchelectrodes 310 in the sensing group G may form the sensing area A. Thesensing area A indicates the occupied area of the sensing electrodes 311sensing the object 400. In some embodiments, the predetermined areaA_(th) may be, but not limited to, greater than or equal to ⅘ or ⅔ of atotal area of the display region. In some other embodiments, thepredetermined area A_(th) may be, but not limited to, greater than orequal to 5 cm². If result of the determining is yes, the step S221 isexecuted. If result of the determining is no, the touch operation modein FIG. 2A is executed.

Referring to FIG. 3 and the step S221 in FIG. 2B, the step S221 isexecuting the standby procedure. In some embodiments, the standbyprocedure may include the step S221A and the step S221B. The step S221Ais turning off the display screen. The step S221B is re-executing thedetermining of whether the object 400 is located in the sensing distanceof the touch electrodes 310 (that is, re-executing the step S101) aftera predetermined standby time. In some embodiments, in the predeterminedstandby time, the touch device 300 does not perform the sensingoperation. Moreover, the duration of the predetermined standby time maybe the manually configured value from the user or the systematicpredetermined value, here is not intended to be limiting.

Therefore, when the touch operation mode is executed, the user may makethe touch device 300 to execute the standby mode through contacting mostof the touch electrodes 310 of the touch device 300. As a result, theconvenience of using the touch device 300 may be increased. Further, ifthe user forgets to turn off the touch device 300 and the touch device300 is erroneously contacted by another object, the erroneous operationmay be prevented through making the touch device 300 automaticallyexecute the standby mode.

FIG. 4 is the flowchart of a touch control method, in accordance withthe second embodiment of the disclosure. Referring to FIG. 4, the touchcontrol method 400 of the second embodiment in the disclosure is usedfor controlling a touch operation mode and a fingerprint recognitionmode. The touch control method includes the step S400 to the step S405.The step S400 is providing a touch device. The touch device includes aplurality of sensing electrodes. The step S401 is determining whether anobject is located in a sensing distance of the sensing electrodes. Thestep S402 is that if result of the determining is yes, detecting asensing group of the sensing electrodes sensing the object. The stepS403 is determining whether a sensing time of a predetermined proportionof the sensing electrodes in the sensing group is greater than or equalto a predetermined time. The step S404 is that if the sensing time isgreater than or equal to the predetermined time, executing thefingerprint recognition mode. The step S405 is that if the sensing timeis less than the predetermined time, executing the touch operation mode.

The difference between the touch control method 400 of the secondembodiment and the touch control method 100 of the first embodiment isthat the touch device is configured to directly detect the sensingelectrodes sensing the object in all of the sensing electrodes for thesensing group, and when the sensing time of the predetermined proportionof the sensing electrodes in the sensing group is greater than or equalto the predetermined time, the touch may be configured to execute thefingerprint recognition mode. In other words, when the user contacts thetouch device for the time greater than or equal to the predeterminedtime, the touch device may execute the fingerprint recognition mode.

Therefore, when the user intends to execute the fingerprint recognitionmode but cannot contact the electrodes of predetermined amount withvarious possible reasons, the user is still able to execute thefingerprint recognition mode by contacting the touch device for the timegreater than or equal to the predetermined time. As a result, theconvenience of using the touch device may be increased. It is worthmentioning that the touch control method 400 of the second embodimentmay also be adopted in the touch device 300 as shown in FIG. 3. Further,the control methods of the fingerprint recognition mode and the touchoperation mode are described in FIG. 2A to FIG. 2C, here is omitted forbrevity.

FIG. 5 is the flowchart of a touch control method, in accordance withthe third embodiment of the disclosure. Referring to FIG. 5, the touchcontrol method 500 of the third embodiment in the disclosure is used forcontrolling a touch operation mode and a fingerprint recognition mode.The touch control method includes the step S500 to the step S506. Thestep S500 is providing a touch device. The touch device includes aplurality of sensing electrodes. The step S501 is determining whether anobject is located in a sensing distance of the sensing electrodes. Thestep S502 is that if result of the determining is yes, detecting asensing group of the sensing electrodes sensing the object. The stepS503 is determining whether a sensing area of the sensing group isgreater than or equal to a first area and less than or equal to a secondarea. The step S504 is determining whether a sensing time of apredetermined proportion of the sensing electrodes in the sensing groupis greater than or equal to a predetermined time. The step S505 is thatif the sensing area is greater than or equal to the first area and lessthan or equal to the second area, and if the sensing time is greaterthan or equal to the predetermined time, executing the fingerprintrecognition mode. The step S506 is that if the sensing area is less thanthe first area or greater than the second area, or if the sensing timeis less than the predetermined time, executing the touch operation mode.

The difference between the touch control method 500 of the thirdembodiment and the touch control method 100 of the first embodiment isthat the touch device is configured to directly detect the sensingelectrodes sensing the object in all of the sensing electrodes for thesensing group, and determine whether to execute the fingerprintrecognition mode or the touch operation mode by the sensing area of thesensing group. In other words, when the user contacts the touch devicewith the sensing area greater than or equal to the first area and lessthan or equal to the second area, and the user contacts the touch devicefor the time greater than or equal to the predetermined time, the touchdevice may execute the fingerprint recognition mode. The first area maybe, but not limited to, the area formed by less than or equal to twentysensing electrodes. The second area may be, but not limited to, the areaformed by more than or equal to two hundred sensing electrodes. Itshould be noted that the sensing area of the sensing group indicates thearea of the single sensing range formed by adjacent sensing electrodes.That is, the sensing area formed by the sensing electrodes in the singlesensing range with respect to the single object being sensed.

Therefore, whether executing the fingerprint mode or the touch controlmode may be determined through the sensing area formed by the sensingelectrodes of the touch device, and the control differentiability of thetouch device may be increased. It is worth mentioning that the touchcontrol method 500 of the third embodiment may also be adopted in thetouch device 300 as shown in FIG. 3. Further, the control methods of thefingerprint recognition mode and the touch operation mode are describedin FIG. 2A to FIG. 2C, here is omitted for brevity.

As used herein, the term “substantially” or “about” refers to a range ofmeasurements of a length, thickness, a quantity, time period, or othermeasurable value. Such range of measurements encompasses variations ofless than or equal to ±10%, less than or equal to ±5%, less than orequal to ±4%, less than or equal to ±3%, less than or equal to ±2%, lessthan or equal to ±1%, less than or equal to ±0.5%, less than or equal to±0.1%, less than or equal to ±0.05% from the specified value, in so faras such variations are appropriate in order to function in the discloseddevices, systems, and techniques.

While this disclosure has been described by means of specificembodiments, numerous modifications and variations may be made theretoby those skilled in the art without departing from the scope and spiritof this disclosure set forth in the claims.

What is claimed is:
 1. A touch control method, configured to control atouch operation mode and a fingerprint recognition mode, the methodcomprising: providing a touch device, wherein the touch device comprisesa plurality of touch electrodes, and each touch electrode comprises aplurality of sensing electrodes; determining whether an object islocated in a sensing distance of the touch electrodes; if result of thedetermining is yes, detecting a sensing group of the touch electrodessensing the object; determining whether an electrode amount in thesensing group is greater than or equal to a first value and less than orequal to a second value; determining whether a sensing time of apredetermined proportion of the touch electrodes in the sensing group isgreater than or equal to a predetermined time; if the electrode amountis greater than or equal to the first value and less than or equal tothe second value, and if the sensing time is greater than or equal tothe predetermined time, executing the fingerprint recognition mode; andif the electrode amount is less than the first value or greater than thesecond value, or if the sensing time is less than the predeterminedtime, executing the touch operation mode.
 2. The touch control methodaccording to claim 1, wherein the fingerprint recognition modecomprising: detecting at least a portion of the sensing electrodes ofthe touch electrodes in the sensing group; obtaining a fingerprintimage; and detecting a fingerprint feature of the fingerprint image andgenerating a determination result.
 3. The touch control method accordingto claim 2, further comprising: executing a fingerprint authenticationaction according to the determination result, wherein the fingerprintauthentication action comprises an unlock action, an authenticationaction, and an open action.
 4. The touch control method according toclaim 3, wherein the authentication action comprises an identityauthentication action, a file encryption/decryption action, and anonline payment action.
 5. The touch control method according to claim 3,wherein the open action comprises a file open authorization action andan application open authorization action.
 6. The touch control methodaccording to claim 1, wherein an area of each sensing electrode is lessthan or equal to 40000 μm².
 7. The touch control method according toclaim 1, wherein the touch device further comprises a display screen,the sensing electrodes are located on a display region of the displayscreen.
 8. The touch control method according to claim 7, furthercomprising: determining whether a sensing area of the sensing group isgreater than a predetermined area when the touch operation mode isexecuted; and if result of the determining is yes, executing a standbyprocedure.
 9. The touch control method according to claim 8, wherein thepredetermined area is greater than or equal to ⅘ or ⅔ of a total area ofthe display region.
 10. The touch control method according to claim 8,wherein the standby procedure comprises: turning off the display screen;and after a predetermined standby time, re-executing the determining ofwhether the object is located in the sensing distance of the touchelectrodes.
 11. The touch control method according to claim 1, whereinthe first value is less than or equal to 5, and the second value isgreater than or equal to
 50. 12. A touch control method, configured tocontrol a touch operation mode and a fingerprint recognition mode, themethod comprising: providing a touch device, wherein the touch devicecomprises a plurality of sensing electrodes; determining whether anobject is located in a sensing distance of the sensing electrodes; ifresult of the determining is yes, detecting a sensing group of thesensing electrodes sensing the object; determining whether a sensingtime of a predetermined proportion of the sensing electrodes in thesensing group is greater than or equal to a predetermined time; if thesensing time is greater than or equal to the predetermined time,executing the fingerprint recognition mode; and if the sensing time isless than the predetermined time, executing the touch operation mode.13. A touch control method, configured to control a touch operation modeand a fingerprint recognition mode, the method comprising: providing atouch device, wherein the touch device comprises a plurality of sensingelectrodes; determining whether an object is located in a sensingdistance of the sensing electrodes; if result of the determining is yes,detecting a sensing group of the sensing electrodes sensing the object;determining whether a sensing area of the sensing group is greater thanor equal to a first area and less than or equal to a second area;determining whether a sensing time of a predetermined proportion of thesensing electrodes in the sensing group is greater than or equal to apredetermined time; if the sensing area is greater than or equal to thefirst area and less than or equal to the second area, and if the sensingtime is greater than or equal to the predetermined time, executing thefingerprint recognition mode; and if the sensing area is less than thefirst area or greater than the second area, or if the sensing time isless than the predetermined time, executing the touch operation mode.